The Burris Thermal Handheld H35 Gen 3 (model BO300637, also known as the BTH35 V3) is a high-performance thermal imaging monocular designed for nighttime scanning, tracking, and surveillance. Equipped with a 400 x 300 VOx thermal sensor and a 12-micron pixel pitch, this device delivers crisp heat signatures through its 35mm F1.0 manual-focus objective lens. Running on a 50 Hz refresh rate and utilizing Burris Cybercore image processing, the unit allows users to spot and identify heat signatures in complete darkness across varied outdoor conditions.

Key Features

• Burris Cybercore Technology: High-performance image processing that clarifies fine temperature differences and provides detailed thermal imagery.
• Intuitive Rotary Dial: A physical dial control system designed for quick menu navigation in pitch-black conditions, even while wearing heavy gloves.
• Versatile Color Palettes: Supports 9 distinct color palettes (including White Hot, Black Hot, Red Hot, Green Hot, Blue Hot, Amber, Sepia, Iron, and Inferno) plus an Outline Mode for rapid target acquisition.
• Hot Spot Tracking and PiP: Features real-time hot spot targeting to pinpoint the warmest signature in the field of view, paired with a Picture-in-Picture mode for detailed identification.
• BurrisConnect App Integration: Built-in Wi-Fi enables live video streaming, photo capture, and remote settings configuration directly on a compatible smartphone.
• Flexible Mounting: Includes a UNC 1/4"-20 tripod thread and side M1913 Picatinny rails for attaching external accessories like auxiliary screens or rangefinders.

Specifications

• Sensor Resolution: 400 x 300 VOx thermal core
• Pixel Pitch: 12 µm
• Thermal Sensitivity: <35 mK NETD
• Refresh Rate: 50 Hz
• Objective Lens: 35mm, F1.0 manual focus
• Magnification: 3.3x optical magnification (up to 13.2x via 1x–4x digital smooth zoom)
• Field of View: 7.8° × 5.9°
• Detection Range: Up to 1,000 meters (deer-sized heat signatures)
• Display: 0.4-inch Color LCOS micro-display, 1280 × 960 resolution
• Battery Type: Two integrated 18650 lithium-ion batteries
• Runtime: ≥ 5 hours at 25°C (rechargeable via USB-C)
• Dimensions: 249 mm × 61 mm × 70 mm (9.8" × 2.4" × 2.8")
• Weight: ≤ 630 grams (≤ 22 oz)
• Environmental Protection: IP67-rated waterproof; operating temperature range from -10°C to +50°C
• Minimum Focus Distance: 3 feet (approx. 0.9 meters)

Who is the Burris Thermal Handheld H35 Gen 3 for?

• Nighttime predator and hog hunters — scouting with a 3.3x optical magnification and 1,000-meter detection range allows users of this thermal imaging monocular to spot and identify game from a distance before planning an approach.
• Rural property security monitors — monitoring acreage is made highly efficient by the 400 x 300 VOx thermal sensor and 12-micron core, which allow this handheld device to detect intruders or livestock movement through absolute darkness and light foliage.
• Search and rescue personnel — locating lost individuals is simplified by the <35 mK NETD thermal sensitivity and the 35mm F1.0 manual-focus lens, ensuring this handheld monocular can detect subtle human body heat signatures in rugged terrain.

Less suitable for: Long-range spotting beyond the 1,000-meter detection limit, extreme environments dropping below -10°C or exceeding +50°C, or direct firearm mounting. For these applications, a dedicated, weapon-mountable thermal riflescope or a long-range thermal spotter with a larger objective lens is recommended.